Press f or plastic materials



(No Model.)

W @Wii 4 Sheets--Sheet 1. E. JORDAN. PRESS FOR PLASTIG MATERIALS.

Patented July 24. 1894.

(No Model.) 4' Sheets-Sheet 2.

v. E. JORDAN. PRESS FOR PLASTIC MATERIALS. 7

N0. 523,430. PaltentedJuly 24,1894.

4 Sheets-Sheet 3.

(No Model.)

B JORDAN PRESS FOR PLASTIC MATERIALS! No. 523,430. Patented July 24, 1894.

(No Model.) 4 Sheets-Sheet 4.

v I E. JORDAN.

PRESS FOR PLASTIC MATERIALS.

Patented July 24 .J'UNITE STATES ,AT NT Enron.

EDMUND JORDAN, OF BROOKLYN, ASSI'GNOR, BY MESNE ASSIGNMENTS, TO

, THE PNEUMATIC PRESS COMPANY, OF YORK, N. Y.

PRESS FOR PLASTIC MATERIAL.

SPECIFICATION forming part of Letters Patent No. 523,430, dated July 24;, 1894.

Application filed March 4,1891. Serial No. 383.713. (No model.)

To all whom it mayconcern:

Be it known that I, EDMUND JORDAN, of Brooklyn, Kings county, and State of New York, have invented a certain new and use ful Improvement in Presses for Plastic Material, of which the following is a specification.

My improvements are specially designed for presses wherein plastic, powdered or granular substances arerto be treated. I

I will describe a press embodying my improvement and then point out the novel features in the claims. v

In the accompanying drawings, Figure 1 is a plan ,or top view of a machine embodying my improvement. Fig. 2 is a side elevation of the same. The side here represented is the side forming the front of the machine. Fig. 3 is a central longitudinal vertical section of the machine. Fig. dis a longitudinal section of certain parts on a larger scale. -Fig. 5 is a longitudlnal section of certain parts representing them in different positions from those which they occupy in Fig. 3. Fig. 6 is a longitudinal section of some of the same parts which are represented in Fig. 5 and also other parts, and representing different. positions of parts which are commonto these figures. Fig. 7 is a vertical transverse section taken at the plane of the dotted line 00a: Fig. 3.

Similar letters of reference designate corresponding parts in all the figures.- v

The framework, A, of the machine of any suitable construction. resented, it consists essentially of a casting a may be of substantially rectangular form erected upon legs a a3, and having fastened to the top of its side portions two pieces a In order to most speedily convey a conception of the machine, I will premise that the pressing devices comprise a body section or mold plate B and opposite end sections or formers G C co-operating with said body section or mold plate. The body section or mold plate may be supported on a cross piece a of of the casting a. I

There will preferably be a number of cavities in the body section or mold plate and a corresponding number of end sections or formers in each of the sets 0 G The end mold plate.

As here repbushings?) of hardened steel will be fitted to each of the cavitiesin the body section or 60 As here shown, these cavities extend horizontally and the end sections or formers occupy horizontal positions and move horizontally toward and from each other, and, consequently, in the direction of the length of the cavities of the body section or mold plate.

The material to be pressed is introduced through feed boxes b which, as here shown, extend vertically downward from the upper 0 part of the body section or mold plate B far 7 enough to communicate with all the cavities. It is to be understood that there is one feedv box for each cavity in the body section or mold plate.

It will be advantageous in treating many substances, to erect a hopper, D, above the body section or' mold plate, so as to conduct the substance to be treated tothe feed boxes.

I have shown an agitator E, combined with the hopper for maintaining the contents of the latter in proper condition to pass. downwardly into the feed boxes. The particular form of agitator which I have represented consists of a rod e, extending horizontally across the hopper from side to side and provided with a number of downwardly extending fingers, e. The ends of the rod are supported in bearings in the sides of the hopper and one end is connected by means of a link 6 with a crank e afiixedto'a shaft deriving motion through bevel gear wheels e e from a pulley e. The pulley e is mounted upon a stud e affixed to the castingaof the machine; The bevel gear wheel (2 is fastened to the pulley e to rotate therewith. Obviously,the r0- E and having the lower ends constructed so as to be of a size to work loosely in the feed boxes b. When thus constructed, the loaders or fillers are intended to descend by gravity and thereby force portions of the contents of the hopper down into the feed boxes and to retain the contents of the feed boxes until the opposite end sections or formers G 0 shall have taken from the feed boxes the proper amount of the substance to be treated and carried it away into the cavities of the body section or mold plate. It is important to secure for these loaders or fillers a yield- "loaders or fillers free to descend by gravity.

Therock shaft F is journaled in bearings formed in the pieces a of the framework, and, as here shown, derives motion from a lever f 'dfulcrumed by a stud f toone of the piecesa and connected by a link f with an arm f 6 atfixed to the said rock shaft. The lever f 3 derives motion from acam f affixedto the main shaft Got the machine, the motion being imparted by the contact of the cam with a shoe f affixed to the lever. It will be seen that the cam is a toe-shaped cam. As soon as its toe passes theshoe f it releases the lever f casting a of the framework A.

whereupon the loaders or fillers will be free to descend, and,by their engagement with the bar f, they will lower this also.

Having now described the body section or mold plate, its appurtenances and the mannerin'which the latter are operated, I will turn to the end sections or formers and explain the manner in which their operation is secured.

The end sections or formers O are all at- 'tached to a horizontally reciprocating crosshead 0' and the end sections or formers C are carried by a horizontally reciprocating crosshead 0 lVhile the end sections or formers C are rigidly connected to the cross head 0, the end sections or formers G on the contrary,have a yielding connection with the crosshead 0 The cross-heads c c are titted to ways or shears 0 c projecting from the Before describing the details of the manner in which the end sections or formers are connected to the cross-heads whereby they are carried, I will explain the mechanism by which the cross-heads are reciprocated.

H designates a block orbearing piece which, as here shown, is fitted to the ways or shears c and is capable of adjustment in the direction of the length of the machine. Toggle ated. Afterward it of a cam 2' afiixed to the main shaft G.

links, I, are pivotally connected to the block or bearing piece, H, to the cross head 0 and to each other. As here shown, there are two pairs of these links. The adjustment of these links into or approximately into line, will produce a movement of the cross-head c, causing the end sections or formers G to move past the feed boxes into the cavities of the body section or mold plate and entirely through the latter. Areverse adjustment of the toggle links into the position in which they are represented in Fig. 3, will cause the reversal of the cross-head c and its end sec tions or formers G. The block H does not receive any movement during these adjustments of the toggle links, as it is fastenedin position by being clamped to the ways or shears 0 Its longitudinal movement along the ways or shears is, in the present example of my invention,simply for the purpose of adjusting it, to produce the proper actionof the end sections or formers C4. The adjust ment of the'block or hearing piece-H may be elfected by means of a wedge h, slidverti cally between it and the opposite partof the casting a of the framing A. The wedge may be adjusted in any suitable manner, as, for instance, by means of astud-bolt h inserted in the casting a, and nuts applied thereto above and below a lug extending from the wedge and surrounding the stud bolt.

The block or hearing piece and the crossheads a c have interposed between their gibs and the ways or shears o e wearing pieces 0 c. The wearingpieces c maybe adjusted by means of set screws 0 to occupy the proper relation to the ways or shears. In the case of the wearing pieces which are combined with the, block or bearing piece l-Llthe screws 0 serve to adjust the'wearing piece 0, so as to 1 eitect a clamping of the said block or'bearing piece to the ways or shearsc resulting in the fastening of the said block or hearing piece in this position after adj ustment. When necessary to effect a new adjustment, it will have to be unclamped and the wedge operwill be re-clamped in position.

The toggle links I are adjusted bylmeans The mechanismthrough which this cam performs its work, I will now describe. links, I, of both pairs, by their meeting ends, are pivotally connected together by means of a pin 6. has loosely mounted on its central portion a roller '5 Thecam i-contacts with thisroller.

On the outer sides of the meeting endsof the toggle linkscylindric hubs i are formed, and

to these are fitted yoke-shaped pieces preferably made in semi-cylindric sections having flanges attheir ends bearing against each other. They are fastened together byscrews and nuts. The screws,-as here shown, form part of rods i extending upwardly to yokes i. Their upper ends, as well as their lower ends, are'screw-tln'eaded, and have nuts ap- This pin loosely fits the toggles and ICC- The toggle plied to the upper-ends above and below the yokes, fastening them'to the 1at-ter.- To the yokes i a cross rod 17 is fastened. It serves to unite the upper ends of the frames con sisting of the yoke-shaped pieces 2', the rods 71 and the yokes i On the rod 1' is loosely mounted a roller i The cam 11 contacts with this roller. The upper ends of these frames are connected with radius bars 2', pivotally connected at one end with the rod 2' and at the other end with a rodi journaled in arms 2' erected upon the side portions of the casting a. The office of these radius bars 'is to maintain the roller 2' in its proper position. It will be readily understood that thecam i acting between the rollers i and i will adjust the toggle links I into the two different positions which they assume in the operation of the machine. It may be here said in passing that I hav represented the main shaft G, which carries the cam i, as provided with a gear wheel g that'engages with a pinion 70 affixed to a driving shaft K. The latter is represented as having abelt pulley k affi xed to it, as a means for transmitting power. v

The cross-head c derives its motion from at the outer end is pivotally connected with one end of a pitman rod j ,having at its other end a head 7' that co-acts with two camsj j",

affixed to the main shaft G. The camj coacts with a roller 9' mounted upon a stud ex-j tending from the headj and the other cam, j co-acts with a roller j, mounted upon a stud extending from said head.- The head 9' is longitudinally slotted to embrace the shaft G, and, as here shown, is supported by means of v a block j that is loosely mounted upon said shaft and fits within the slot of the head.

. This manner of supporting the head allows it to move longitudinally while supported upon 'the shaft G, andthus it is enabled to impart Y motion to the rock shaft 3' It also allows the head to oscillate uponthe shaft G, as may be necessary for it to do because'of I its connec- "-pitman rod 7 as made in two sections having tion withthe crank arm 3' I have shown the its adjacent ends reversely screw-threaded and united by means of a turnbucklej p I This is advantageous for adjustment of its length. Obviously, by oscillating the rock shaft 7' the toggle links j 3' will be adjusted out of and into, or approximately into, line.

The latter adjustment will produce a movement of the cross-head c andof its end sections or formers 0 toward the end sections or formers O, and the reverse adjustment will of course produce a reverse movement of the cross-head c and the end sections or formers O I have. already said that the end sections or formers C have a yielding connection with the cross-head 0 I will now describe the means whereby this yielding connection is -the movement of the block toward the upwardly extending portion of the cross-head.

A spring 0 is interposed between a The advantage of the yielding connection of the block with the cross-head maybe more clearly explained in connection with the operation of the machine.

There is combined with each set of end sections or formers,a gas chamber. The end sections or formers O are connected'w-ith a 1 gas chamber L, carried by the cross-head c,

and the end sections or formers O are connected with a gas chamber L which is fastened to the block e of the cross-head 0 The end sections or formers have passages extending longitudinally through them from their outer to their inner extremities. This construction may perhaps be best understood by reference to Fig. 4. The inner ends of the end sections or formers communicate with the gas chambers and are adapted to receive gas therefrom at certain times.

With the end sections or formers, there are combined valves or ejectors, M, located at their operative extremities or shaping surfaces and other valves, N, which co-act with the'inner ends, communicating with the gas chambers. lVhen the valves or ejectors M gas to the shaping surfaces'of the end sections or formers, but at this time the valves N will be removed from their seats, so as to permit gas to flow from the gas chambers through the end sections or formers, as far as the valves M. The valves M and-N are shown as connected together by rods, 0, extending through the end sections or formers.

These rods are made so small as not to interfere with the flow of gas. Preferably springs will be combined with the, valves N, so as to hold them normally open, and, as here shown, springs n are shown as being coiled "around the rods 0 between the valves N and shoulders formed on the end sectionsor formers.

Gas, which may be compressed air, .issup plied to the gas chambers by means of flexible pipesil' Z from any suitable reservoir .orcontainer. As here shown, a reservoir or con-- are seated, they will prevent the passage of its motions from a rod'p connected pivotally at one end' to anarm extending from the plug of the cock or valve, and at the other end with the crankarm 9' Obviously, this valve will intermittingly permit the flow of gas from the reservoir-or containerP to thegas chambers. It is intended that the gas shall flow to both gas chambers simultaneously and at proper times to detach articles formed be tween the operative extremities of the end sections or formersC' 0 For maintaining a supply of gas in the reservoir=or container P,I have shown apump Q, as connected with it by meansof a pipe q.

The piston of the pump may be operated by an eccentric q affixed to the driving shaft K.

In treating some substances, I preferably combine with the valves or ejectors M, mech-. anism whereby they may be forced outwardly from their seats to permit of the flowof gas to articles pressed in and held by the shap-l ing endsof the end sections or formers. .I

have shown mechanism comprising cams R R made by forming suitable slots in rock,

shafts .journaled in the. gas chambersand facing a portion of the slots with wearing pieces. These rock shaftsextend through the gas chambers, and,at those ends which are near.

that side of the machine which constitutes its; front, have arms 0* r affixed to them. The rocking of these arms will oscillate the rock shafts in such direction as to force the rods, 0, outwardly. This will cause the opening of the valves or ejectors M; .Motion will be transmitted to the rods 0 through the valves N as the rock shafts contact with the latter, hence when the rods 0 are moved outwardly and the valves or ejectors M opened, the valves N will beclosed. Theopening of the valves or ejectors M will permit the passage of gas to thearticles shaped by the operative extremities of the end sections or formers for There will be apuffof gas detaching them. through each end section or former, because the completion of the movement produced by the rock shafts will close the valves N, so as to cut off communication between the gas boxes by the loaders or fillers, and, while still chambers and the end sections or formers.

The operation of the cock 1) is so timed as to leave the reservoir or container P in communication with the gas chambers long enough for gas to be properly supplied to the end sections or formers. The rockingof the arms 7'' r is effected by means of fixed cams Thecam r is incapable of any movement except for adjustment and is fastened to one of the sides of thecasting a. The end sections or formers 0 move out of and away from the body section or mold plate 13, and,

' as they do this, the arm r comes in contact with the fixed cam'r. The continuation of this movement of the endsection or formers .0 causes the arms 0" to be depressed by the fixed cam r in such direction as to oscillate the rock shaft R so that it will open the valves or ejcctors M and close the valves N of said end sections or formers O Obviously, when the end sectionsor formers move toward the body'sections or mold plate, the arm, 4" will be carried away from the fixed cam r and will resume itsnormal position. It is adjusted to its normal position by a spring 7' attached to the end of the gas chamber L and bearing against said arm. The spring T will force it againstapin 0' When the end sectionsor formers 0 move toward the end sections or formers ci, the arm r will be carried into contact with the lfixed cam 0*. This fixed cam r is verticallyladj ustable against the resistance of aspring 'rLwhich bears atone end against a portion of this cam and also against a bracket r which is fastened to the casting a. The upper'end of the arm a"? and the lower extremityof thefixed cam r are rounded or inclined, so that the said arm, on contacting with the ifixed cam, may, While the end sections or formers are moving in the direction last mentioned, raise saidcam and pass by it. No motion is immovement is resisted by astoppino When the end sections or formers O begin their movement in the reverse direction, the arm 0" will contact with the fixed-cam 0*, which will havedropped behind said arm, and the continued movement of said end sections or formers 0' will cause a depression of the arm r in such direction that the valves or ejectors M of said end sectionsor formers C will be opened and the valves N thereof closed. The tilting of the arm 4" will enableit to pass the cam r and when it shall have passed the latter a spring 0" restores the arm r to its normal position resting against the stop pin r Having now described the various parts and their movements, I will explain more fully the operationot' the parts in pressing orshaping material.

When the parts are in the starting position, the two sets of end sections orformers will occupy the positions represented in Fig. 3, each set of end sections or formers being arranged at one side of the feed boxes I). The substance to be treated will be fed into the feed tions or formers, C, will, by acting through the substance intermediate of their operative extremities and the operative extremities of parted to the arm 1" at this time because its the end sections or formers O impart movement to the end sections or formers C the block 0 yielding to permit of this. In this way, a partial pressing of the substance will be effected. The endsections or formers, C in the operation of pressing, will be forced entire] y out of the body section or mold plate and the operative extremities of the end sections or formers G will also be carried through the latter. The pressing will be completed outside of the body section-or mold plate by the operative extremities of the two sets of end sections or formers coming together. Itwill be seen that the operative extremities of the two sets of end sections or formers are beveled oft ate. This is so as to obviate as far as practicable the forming of any fin or projection on thepressed. articles and the separation of surplus material, escaping from the shaping cavities during the pressing operat on. Balls will be formed when shaping cavities of the kind illustrated are employed.

To prevent the extremities of the two sets of endsections or formers from sufiering injury, I preferably combine with the body section or mold plate, a stop pin, S, which -will limit the movement of the cross heads toward each other. I have shown such a stop p1n pass1ng horizontally through the'body section or mold plate and having at one end a head 8. i In this head 8 a cavity is formed and from this cavity to the extremity extends a radial slot. From 'the sides of the slot, lugs s extend. A screw .9 combined with these lugs, serves to draw the sides of the slotted part of the head together. The cav- 1ty 1n the head is tapped and has fitted to it a screw 8 By adjusting this screw 8 the length of the pin S as a whole may be varied, so as to adjust the point at which the movement of the two sets of end sections or formers toward each other will be terminated. By tightening the screw s after the adjustment of the screw 5 the latter may be clamped in position.

After the two sets of end sections or formers shall have completed the pressing operation, a reverse movement of both sets will be produced by means of raising the connected ends of the toggle links I and of the toggle links J J Just before this time, the cock p will be opened to admit air to the gas chambers L L and at the proper time the shafts R R will be oscillated, so as to permit of putts of gas passing through the end sections or formers to detach the articles pressed between the same.

What I claim as my invention, and desire to secure by Letters Patent, is+

1. In a press; thecombination of a body section or mold plate, end sections or formers arranged with their operative extremities opposite to each other, and mechanism whereby said end sections or formers will be moved into the body section or mold plate and afterward together moved entirely out of the same while still forcibly impelled toward one ancross-heads carrying said end sections or formers into and out ofv the body section means whereby one of the said end sections or formers is connected in a yielding manner with its cross-head, and means for operating both of said end sections or formers substantially as specified.

3. In a press, the combination of a body section or mold plate, end sections or formers,

cross-heads carrying said end sections or formers into and out of the body section, sets of toggle links for moving each of said crossheads and a block carrying one of said end sections or formers and havinga sliding connection with its cross-head, substantially as specified.

4. In a press, the combination of a body section or mold plate, end sections or formers, cross-heads carrying said end sections or formers into and out of said body section, sets of toggle links for moving said cross-heads, a block carrying one of said end sections or formers and having a sliding connection with its cross-head,'and a spring intermediate of said block and cross-head, substantially as specified. J

5. In a press, the combination of a body section or mold plate, end sections or formers, ,a cross-head carrying one of the end sections or formers, toggle links, I, imparting motion to the latter, a pin or rod 2" uniting the ends of said toggle links, a roller 2' mounted on this pin or rod, a rodt' connected to said pin or rod 1', a roller i mounted on said pin or rod t and a cam operated by said rollers 11 2' substantially as specified.

6. In a press, the combination of a body section or mold'plate, end sections or formers, a cross-head carrying one of the end sections or formers, toggle links, I, imparting motion to the latter, a pin or rod 11 uniting the ends ofsaid toggle links, a roller 1? mounted on this pin or rod 71, a rod 2'", frames connecting said rod '17 with the pin or rod t", a roller i mounted on the rod 2, radius bars 2' for sustaining the rod 2' in its proper position and a cam operating upon said rollers 01 i substantially as specified.

7. In a press, the combination of a body section or mold plate, end sections or formers,

a cross-head carrying one of the end sections or formers, toggle links, I, imparting motion to the latter, a cam for operating said toggle links a sliding block,II, with which said toggle links are connected, and. means for moving said block, substantially as specified.

8. In a press, the combination of a body section or mold plate, end sections or formers, a cross-head carrying one of the end sections or formers, toggle links, I, imparting motion to the latter, a cam for operating said toggle links, a sliding block, II, with which said toggle links are connected means, as a wedge; for adjusting said sliding block and means, asa clamp, for securing it in position, substantially as specified.

9. In a press, the combination of a body section or mold plate, opposite end sections or formers, toggle links, I, J J for moving one of said end sections or formers, a rock shaft 3' a crank j" on this rock shaft, a rodj made of two sections, a turn buckle j uniting said sections and cams j j for operating said rod, substantially as specified.

10. In a press, the combination of a body section or mold plate, opposite end sections or formers, toggle links J J for moving one'of said end sections or formers, a rock shaft 9' a crank j? on this rock shaft, a rod extending from said crank and having a slotted head or end, a block fitting within the slot of the head 'or end and a shaft supporting said block whereby said rod may oscillate upon this shaft and move lengthwise over said shaft, substantially as specified.

11. In a press, the combination of opposite end sections or formers, a body section or mold plate with which said end sections or formers co-operate, feed boxes, a hopper above the feed boxes, loaders or fillers co-acting with said feed boxes and working into the hopper, and means for operating said loaders or fill ers, substantially as specified.

12. In a press, the combination of opposite end sections or formers, a body section or mold plate with which said end sections or formers co-operate, a feed box, a hopper, a loader or filler co-acting with. said feed box and a bar for. raising said loader or filler and afterward allowing it to descend by gravity, substantially as specified.

13. In a-press, the combination of opposite end sections or formers, a body section or mold plate with which said end sections or formers co-operate, a feed box, a loader or filler coacting with said feed box, abar f for raising said loader or filler, a lever f for actuating said bar and a cam f for oscillating said lever, substantially as specified.

14. In a press, the combination of opposite end sections or formers, a body section or mold plate, a feed box, aloader or filler coacting with said feed .box a hopper and an agitator in said hopper, substantially as specified.

15. In a press, the combination of opposite end sections or formers, a body section or mold plate, a feed box, a loader or filler coacting with said feed box, a hopper and an agitator consisting of a reciprocating bar provided 7 with teeth operating within said hopper, substantially as specified.

, 16. In a press, the combination of a body section or mold plate, opposite end sections or formers, gas chambers with which said end sections or formers communicate, valves or ejectors at the operative extremities of said endsections or formers, and means independent of the gas pressure, whereby said valves or ejectors will be opened to permit of the passage of gas to detach articles pressed by the said end sections or formers, substantially as specified.

17. In a press, the combination of a body section or mold plate, opposite end sections or formers, gas chambers with which said end sections or formers communicate, valves or ejectors at the operative extremities of said end sections or formers, and oscillating shafts whereby said valves or ejectors will be forcibly opened to permit of the passage of gas to detach articles pressed by the said end sections or formers, substantially as specified.

18. In a press, the combination of a body section or mold plate, opposite end sections or formers, gas chambers with which said end sections or formers communicate, valves or ejectors at the operative extremities of said end sections or formers, oscillating shafts R R arms 0* r and cams r r, substantially as specified. I

19. In a press, the combination of a body section or mold plate, opposite end sections or formers, gas chambers with which said end sections or formers communicate, valves or ejectors at the operative extremities of said end sections or formers, valves at the inner extremities of said end sections or formers and connected with the valves or ejectors aforesaid,-and means independent of the gas press ure, whereby said valves or ejectors will be forcibly opened to permit of the passage of gas to detach articles pressed bythe said end sections or formers, substantially as specified.

20. In a press, the combination of opposite end sections or formers having theiroperative extremities beveled and a stop pin for limiting the movement of the opposite end sections or formers toward each other, substantially as specified.

zoo

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EDMUND JORDAN.

Witnesses:

Louis 11. REED, JACOB G. CARPENTER. 

